An epic bug hunt featuring a unique blend of co-op play and squad-level tactics. With your friends, form a squad of four distinct IAF Marine classes. Plan your attack using an unlockable arsenal of weapons with countless loadout configurations against a wide variety of aliens. Blaze your way through an overrun, off-world colony, eradicating the alien infestation in environments ranging from the icy planet's surface, to a subterranean lava-flooded mining facility.

Summary List Popular Mods  (0 - 30 of 34)
Lambda Wars
Alien Swarm

1. Lambda Wars

1 week ago Released Sep 25, 2012 Single & Multiplayer Real Time Strategy

Lambda Wars (formerly Half-Life 2: Wars) brings the struggle between the human resistance and their Combine overlords to a multiplayer real-time strategy...

Swarm Director 2
Alien Swarm

2. Swarm Director 2

3 days ago Released Jul 4, 2014 Single & Co-op Third Person Shooter

Alien Swarm with a twist. Better AI, new mutations, new mapper tools.

Hypovolemia
Alien Swarm

3. Hypovolemia

1 week ago Released May 15, 2012 Single & Multiplayer Third Person Shooter

Hyp is a top-down shooter that focuses on intricate game design while offering a unique way to be immersed in the shooting culture.

Bloodlines Resurgence
Alien Swarm

4. Bloodlines Resurgence

7 months ago TBD Single, Multiplayer & Co-Op Role Playing

The Bloodlines Resurgence Project is a community effort to update the original Vampire Bloodlines game, bringing it to the current Source engine. To achieve...

ALIENS
Alien Swarm

5. ALIENS

10 months ago TBD Single & Multiplayer Tactical Shooter

A mod for Alien Swarm that is based on the ALIENS movie but for a set of new marines to go and investigate LV426 and see what happened there! (This is...

Alien Swarm: Reactive Drop
Alien Swarm

6. Alien Swarm: Reactive Drop

2 weeks ago Released Apr 9, 2014 Single, Multiplayer & Co-Op Arcade

Adds new PvP game modes, co-op features and singleplayer support into Alien Swarm without changing its concept.

Alien Swarm:SP
Alien Swarm

7. Alien Swarm:SP

10 months ago Released Feb 26, 2011 Single Player Third Person Shooter

Play the official Alien Swarm maps and any addons through the Offline Practice mode. Alien Swarm:SP also supports a large amount of configurable changes...

Lost Squad
Alien Swarm

8. Lost Squad

1 month ago Coming Q4 2014 Single Player First Person Shooter

Lost Squad - is a mod about what happened to Barney Calhoun after Half-Life 2: Episode One events and why he was not in Half-Life 2: Episode Two. Cause...

Zombie Swarm.
Alien Swarm

9. Zombie Swarm.

6 months ago TBD Multiplayer Third Person Shooter

Greetings, members of ModDB. My name is Kenny, and I am currently the sole team member of the Zombie Swarm team. I originally started this project in...

Alien Swarm Aliens Mod
Alien Swarm

10. Alien Swarm Aliens Mod

3 years ago Released Oct 31, 2010 Single & Multiplayer Tactical Shooter

this "mod" will replace weapon's data and sounds for alien swarm making it feel like Aliens. Furthermore, maps will be made for this mod and the final...

Omnibus
Alien Swarm

11. Omnibus

3 years ago TBD Single & Multiplayer Arcade

Warhammer 40k mod for Alien Swarm. You play as one of four members in a Space Marine squad and you're sent to a Tyranid infected planet to investigate

Lylat's Last Stand
Alien Swarm

12. Lylat's Last Stand

6 months ago TBD Single & Multiplayer Third Person Shooter

SFR (WIP title) is a mod for the Source Engine. It's based on the 3d shooter game Starfox. It will be mostly based on the 1993 nintendo power comics...

Alien Swarm: Rifle Mod
Alien Swarm

13. Alien Swarm: Rifle Mod

2 weeks ago Released Jan 1, 2014 Single & Co-op Arcade

Rifle Mod is an Alien Swarm server-only mod that forces players to play with assault rifles only, harder aliens, more ammo, smarter bots. However rifle...

Alien Swarm Director Mod
Alien Swarm

14. Alien Swarm Director Mod

2 months ago Released Nov 3, 2011 Single Player Third Person Shooter

Welcome to the Alien Swarm Director Mod! ASDM is a single player Alien Swarm mod focusing on increasing replayability by creating a dynamic experience...

Black Mesa Swarm
Alien Swarm

15. Black Mesa Swarm

1 year ago Released Dec 20, 2013 Single & Multiplayer First Person Shooter

Black Mesa Swarm is an Alien Swarm total conversion remaking Valve Software's award-winning PC game, Half-Life.

ALIEN SWARM FP
Alien Swarm

16. ALIEN SWARM FP

8 months ago TBD Co-op First Person Shooter

This is a first person view modification of "Alien Swarm"

Phobos Incident
Alien Swarm

17. Phobos Incident

3 years ago TBD Multiplayer Third Person Shooter

Phobos Incident is going to be a full-fledged campaign for Alien Swarm. It can be considered as a re-imagining or an alternate future for the base that...

Apocalypse-22
Alien Swarm

18. Apocalypse-22

2 days ago TBD Single, Multiplayer & Co-Op First Person Shooter

Apocalypse cuenta la historia de Abigaíl, una mujer de 28 años de edad en un futuro apocalíptico y sin memorias de su pasado. (Historia en desarrollo)

ASB²  mod
Alien Swarm

19. ASB² mod

1 year ago Released Jul 2, 2012 Multiplayer Tactical Shooter

ASB² mode (alien swarm beyond brutal) is a reborn ASBi game mode emphasizing the higher degree of difficulty, which includes the invalidity of such options...

Alien Frenzy
Alien Swarm

20. Alien Frenzy

4 years ago TBD Multiplayer Real Time Strategy

The year is 2026. The earth has been mostly destroyed by sunflares after the alien invasion. It seems their planet was destroyed first. The aliens came...

Lights
Alien Swarm

21. Lights

2 years ago TBD Single & Multiplayer Cinematic

Once you find the light, nothing can defeat you...

Swarm Keeper
Alien Swarm

22. Swarm Keeper

1 year ago Released Jun 3, 2012 Single & Multiplayer Real Time Strategy

Swarm Keeper is a Dungeon Keeper inspired modification for Alien Swarm. It offers the following features: Build a dungeon for your creatures (aliens...

Brawlers
Alien Swarm

23. Brawlers

1 year ago TBD Multiplayer Third Person Shooter

After the dust had settled from the worlds greatest war, stockpiles of defunct weapons and ammunitions around Europe were scheduled for destruction. Private...

Alien Swarm: The Darkness
Alien Swarm

24. Alien Swarm: The Darkness

3 years ago TBD Single & Multiplayer Tactical Shooter

The Darkness is a mod designed to put the players into a much more difficult position than that of the original Alien Swarm, by removing a lot of lighting...

Infestation
Alien Swarm

25. Infestation

3 years ago TBD Multiplayer Third Person Shooter

Lots more details in latest news post, looking for more team members too - if you feel you have something you could add to the mod send me a pm for a...

SourceForts 2
Alien Swarm

26. SourceForts 2

1 year ago TBD Multiplayer First Person Shooter

Redefine the environment around you. SourceForts 2 is a FPS game designed around building your base and battling against the opposing team in order to...

Alien Haunt
Alien Swarm

27. Alien Haunt

3 years ago Released Oct 31, 2010 Single & Multiplayer Adventure

Alien Haunt. A Map for Alien Swarm. 1 Campaign with 5 maps. Get ready to be swarmed by aliens!

Alien Swarm SDK Template Conversion
Alien Swarm

28. Alien Swarm SDK Template Conversion

2 years ago Released Mar 14, 2012 Single & Multiplayer First Person Shooter

C_b_fofep and I decided to convert the Alien Swarm build back into an FPS source engine version. This takes the orange box or the SDK template code and...

Uprise
Alien Swarm

29. Uprise

2 years ago TBD Multiplayer First Person Shooter

The Resistance have mobilized agaisnt the Combine, causing the streets of City 17 to be turned into a warzone. Fight for the Resistance as a Rebel or...

B.R.I.S.k.
Alien Swarm

30. B.R.I.S.k.

1 year ago TBD Single Player Arcade

B.R.I.S.k. is a game with unique gameplay developed by a team «Two On The One Box», which has created a modification for the game Portal 2 - Afterword...

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Alien Swarm
Platform
Windows
Developer & Publisher
Valve
Engine
Source
Contact
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Official Page
Alienswarm.com
Release Date
Released Jul 18, 2010
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Lambda Wars (Alien Swarm)
Lambda Wars Alien Swarm - Single & Multiplayer Real Time Strategy
Swarm Director 2 (Alien Swarm)
Swarm Director 2 Alien Swarm - Single & Co-op Third Person Shooter
Hypovolemia (Alien Swarm)
Hypovolemia Alien Swarm - Single & Multiplayer Third Person Shooter
Bloodlines Resurgence (Alien Swarm)
Bloodlines Resurgence Alien Swarm - Single, Multiplayer & Co-Op Role Playing
ALIENS (Alien Swarm)
ALIENS Alien Swarm - Single & Multiplayer Tactical Shooter
Alien Swarm: Reactive Drop (Alien Swarm)
Alien Swarm: Reactive Drop Alien Swarm - Single, Multiplayer & Co-Op Arcade
Alien Swarm:SP (Alien Swarm)
Alien Swarm:SP Alien Swarm - Single Player Third Person Shooter
Lost Squad (Alien Swarm)
Lost Squad Alien Swarm - Single Player First Person Shooter
Zombie Swarm. (Alien Swarm)
Zombie Swarm. Alien Swarm - Multiplayer Third Person Shooter
Alien Swarm Aliens Mod (Alien Swarm)
Alien Swarm Aliens Mod Alien Swarm - Single & Multiplayer Tactical Shooter
Omnibus (Alien Swarm)
Omnibus Alien Swarm - Single & Multiplayer Arcade
Lylat's Last Stand (Alien Swarm)
Lylat's Last Stand Alien Swarm - Single & Multiplayer Third Person Shooter
Alien Swarm: Rifle Mod (Alien Swarm)
Alien Swarm: Rifle Mod Alien Swarm - Single & Co-op Arcade
Alien Swarm Director Mod (Alien Swarm)
Alien Swarm Director Mod Alien Swarm - Single Player Third Person Shooter
Black Mesa Swarm (Alien Swarm)
Black Mesa Swarm Alien Swarm - Single & Multiplayer First Person Shooter